Beautiful. Rare. Cherished. Each diamond is unique and is a miracle of time, place and change. And each has specific qualities that...

Diamonds and coal are formed from carbon. Carbon dioxide located about 160km beneath the surface of the earth is the source of diamonds....

Birthstones are gems associated with the month that a person was born. Birthstones appear to have a biblical source, tracing back to the...

The Mohs scale of mineral hardness is a qualitative ordinal scale characterising scratch resistance of various minerals through the...